Convective stabilization of ionospheric plasma clouds

Details Convective stabilization of ionospheric plasma clouds Convective stabilization of ionospheric plasma clouds

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....9110108d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Sept. 1, 1986, p. 10108-10116. DNA-supported research.

Physics

6

Flow Stability, Ionospheres, Plasma Clouds, Plasma Dynamics, Space Plasmas, Barium Ion Clouds, Eigenvalues, Magnetohydrodynamic Stability, Plasma Drift, Plasma Temperature, Wave Propagation

Scientific paper

A stability criterion was derived for the large-scale structuring of ionospheric plasma clouds due to the E x B gradient drift instability. The linear stability analysis of two-dimensional plasma clouds, based on the water bag model of Overman et al. (1983) was extended by including parallel dynamics; i.e., density and potential fluctuations along the ambient magnetic field. The analytical results are applied to ionospheric Ba clouds to estimate the conditions at which they will cease structuring. It was estimated that for midlatitude Ba releases at about 180 km, the transverse size of the cloud was in the range of 160-480 m, which is consistent with observations.

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